Re-add syntax highlighting to daily emails and

...ATDC lessons

source/_pages/atdc/2.md

@@ -22,7 +22,7 @@ For example, how do we test the administration pages to see if they work for a u
 
 Let's start with a new test:
 
-```php
+```language-php
 public function testAdminPageLoggedIn(): void {
   $this->drupalGet('/admin');
 
@@ -47,7 +47,7 @@ This is commonly known as the **Arrange** step of the test.
 
 To create a user, use `$this->drupalCreateUser()` and `$this->drupalLogin()` to log in as that user.
 
-```php
+```language-php
 $user = $this->drupalCreateUser();
 
 $this->drupalLogin($user);
@@ -61,7 +61,7 @@ As we're testing against a temporary Drupal installation, we don't have access t
 
 To do this, when creating the user, include an array of permissions to add to it:
 
-```php
+```language-php
 $user = $this->createUser(permissions: [
   'access administration pages',
   'administer site configuration',
@@ -80,7 +80,7 @@ Let's create a page and test we can view it.
 
 Firstly, let's ensure the page is not found:
 
-```php
+```language-php
 public function testContent(): void {
   $this->drupalGet('/node/1');
   $this->assertSession()->statusCodeEquals(Response::HTTP_NOT_FOUND);
@@ -91,7 +91,7 @@ Similar to `$this->createUser()`, there are similar methods to create content ty
 
 Again, as there are no existing content or content types, we need to create them and add the follow-up assertions:
 
-```php
+```language-php
 public function testContent(): void {
   // ...
 
@@ -111,7 +111,7 @@ You're probably expecting the test to pass now, but you'll likely get an error l
 
 To fix this, we need to tell Drupal to enable the `node` module within the test by adding this within the test class:
 
-```php
+```language-php
 protected static $modules = ['node'];
 ```
 
@@ -123,7 +123,7 @@ Here's a tip for today: if you're getting an unexpected status code or another e
 
 To do that, add this to your test, and it will output the page content:
 
-```php
+```language-php
 var_dump($this->getSession()->getPage()->getContent());
 ```